﻿<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
</head>
<body>
 <div style="border:1px solid blue;height:50px">header</div>
 <div style="border:1px solid blue;height:100%">
<div style="border:1px solid blue;float:left;height:auto;width:20px">left</div>
<div style="border:1px solid blue;float:right;height:auto;width:20px">header</div>

</div>
<div style="border:1px solid green;height:10px;position:absolute">footer</div>
</body>
</html>
